return gradleInstallation == null ? null : gradleInstallation.getGradleHome();
    }

    @Override
    public File getGradleUserHomeDir() {
        return startParameter.getGradleUserHomeDir();
    }

    @Override
    public StartParameterInternal getStartParameter() {
        return (StartParameterInternal) startParameter;
    }

    @Override

            if (distributionBaseDir != null) {
                return distributionBaseDir;
            }
            File userHomeDir = connectionParameters.getGradleUserHomeDir();
            return userHomeDir != null ? userHomeDir : GradleUserHomeLookup.gradleUserHome();
        }
    }

    private static class InstalledDistribution implements Distribution {

            // This sets some static state that uses files from the user home dir, such as DLLs
            connector.useGradleUserHomeDir(context.getGradleUserHomeDir());
            try (ProjectConnection connection = connector.connect()) {
                connection.getModel(BuildEnvironment.class);
            }
        } finally {
            connector.disconnect();

        operations.none("Clean up ${getBuildCacheName()} ($cacheDir)")
        assert gcFile().lastModified() == lastCleanupCheck
    }

    @Override
    TestFile getGradleUserHomeDir() {
        return executer.gradleUserHomeDir
    }

        }

        try {
            File sessionReportDir = computeReportDirectory(timeProvider);
            return new ChecksumAndSignatureVerificationOverride(buildOperationExecutor, startParameter.getGradleUserHomeDir(), verificationsFile, checksumService, signatureVerificationServiceFactory, startParameter.getDependencyVerificationMode(), documentationRegistry, sessionReportDir, gradlePropertiesFactory, fileResourceListener);

        currentCacheDir.assertExists()
        currentDist.assertExists()

        getGcFile(currentCacheDir).assertExists()
    }

    @Override
    TestFile getGradleUserHomeDir() {
        return executer.gradleUserHomeDir
    }

    }

    void forceCleanup(File file) {
        file.lastModified = System.currentTimeMillis() - DAYS.toMillis(DEFAULT_MAX_AGE_IN_DAYS_FOR_DOWNLOADED_CACHE_ENTRIES + 1)
    }

    @Override
    TestFile getGradleUserHomeDir() {
        return executer.gradleUserHomeDir
    }

    override fun getExtensions(): ExtensionContainer =
        delegate.extensions

    override fun getGradleVersion(): String =
        delegate.gradleVersion

    override fun getGradleUserHomeDir(): File =
        delegate.gradleUserHomeDir

    override fun getGradleHomeDir(): File? =
        delegate.gradleHomeDir

    override fun getStartParameter(): StartParameterInternal =

        actual.load(new ByteArrayInputStream(actualFile.bytes))
        assert expected == actual
    }

    String getActualXml(File file) {
        def gradleUserHomeDir = executer.getGradleUserHomeDir()
        def homeDir = gradleUserHomeDir.absolutePath.replace(File.separator, '/')

     *
     * This directory is used to cache downloaded resources, compiled build scripts and so on.
     *
     * @return The user home directory. Never returns null.
     */
    File getGradleUserHomeDir();

    /**
     * Returns the Gradle home directory, if any.
     *
     * This directory is the directory containing the Gradle distribution executing this build.
     * <p>